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    Friday, November 2, 2018

    Proper Air Duct Cleaning Methods

    What You Need to Know About Air Duct Cleaning

    Air-duct cleaning is really a misnomer. In fact, the whole Heating and cooling system ought to be cleaned. Failure to wash all aspects of the machine can lead to recontamination from the entire system, thus minimizing the advantages of cleaning.

    Just as you wouldn’t clean only half of your living room floor, you also would not want to clean only part of your HVAC system. NADCA recommends cleaning the entire HVAC system, including the following components:

    • air ducts
    • coils
    • drain pan
    • registers
    • grills
    • air plenum
    • blower motor and assembly
    • heat exchanger
    • air filter
    • air cleaner

    There are two key components to HVAC cleaning: breaking contaminants loose, and collection of contaminants.

    Breaking Contaminants Loose

    Properly cleaning HVAC systems requires removing the sources of contamination. Source removal begins with the use of one or more agitation devices designed to loosen contaminants from the surfaces within the heating and air conditioning system. Examples of agitation devices include: brushes, air whips and compressed air nozzles or “skipper balls.” Agitation can also be achieved through hand-brushing or contact vacuuming.

    Collection of Contaminants

    During cleaning, the whole Heating and cooling product is placed directly under continuous negative pressure (vacuum pressure) to avoid multiplication of contaminants. Continuous negative pressure enables very fine particles to become taken off the machine because they become airborne, making certain these particles aren't released in to the living area once the product is switched on after cleaning. This negative pressure also serves to extract the loosened contaminants, that are collected and removed out of your home.

    Read Also: Air Duct Cleaning Process

    System Access

    HVAC system cleaning is not a complex process, but each job is unique. Where possible, access to duct interiors should be made through existing openings such as supply diffusers, return grills, duct end caps and existing service openings. Cleaning technicians may need to cut access holes in the duct work in order to reach inside with various cleaning tools. Creation of these service openings, and their subsequent closure, requires craftsmanship and professional skills.

    Equipment Requirements

    There is a wide variety of equipment available to HVAC cleaning professionals. Both truck-mounted and portable vacuums can be used to stop the spread of contaminants and get the system cleaned to the NADCA Standard.

    Antimicrobial Chemicals

    Antimicrobial chemicals include sanitizers, disinfectants and deodorizers that may be put on nonporous surfaces in Heating and cooling systems to deal with microbial contamination which help control odors. Only chemicals registered using the U . s . States Ecological Protection Agency (Environmental protection agency) may be used. These items must only be looked at after mechanical surface cleaning continues to be performed and when the requirement for such treatment continues to be considered necessary. Evaluate the NADCA White-colored Paper on Chemical Applications in Heating and cooling Systems to learn more.

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